Dissertations / Theses: 'Mapping'

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Klahr, Joakim. "Texturmappningsalgoritmer : Jämförelse mellan Normal-mapping, Parallax-mapping och Relief-mapping." Thesis, University of Skövde, School of Humanities and Informatics, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-1034.

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Denna rapport jämför tre stycken texturmappningsalgoritmer vars uppgift är att öka detaljrikedomen på ytor utan att tillföra några extra polygoner. Algoritmerna är tre stycken pixel-shaders vars uppgift är att skapa illusionen av tre dimensioner istället för två på de ytor algoritmerna är applicerad på. Ytor med få polygoner ska se ut att bestå utav många fler.

Fyra expriment har utförts på tre, till formen mycket olika, 3D-modeller tillsammans med tre olika texturuppsättningar berstående utav färg-, normal- och höjdtextur.

Resultatet visar att alla tre tekniker har olika starka och svaga sidor och på så vis sina optimala användningsområden.

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Echeverría, Ciaurri David. "Multi-level optimization space mapping and manifold mapping /." [S.l : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2007. http://dare.uva.nl/document/45897.

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Nečas, Ondřej. "Photon mapping." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2009. http://www.nusl.cz/ntk/nusl-236747.

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This thesis deals with practical implementation of photon mapping algorithm. To achieve better results some basic and some more advanced methods of global illumination has been examined. These time demanding algorithms are often practically unusable and their further optimization is necessary. Optimized ray tracer is essential for practical implementation. Computing diffuse interreflection by Monte Carlo sampling is also very time demanding operation. Therefore it is appropriate to use it along with proper interpolation.

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DeBellis, Elizabeth Ann. "Mapping Threads." Kent State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=kent1416587832.

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Dwyer, Léah. "Mapping Pinpoints." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587035794031017.

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Deputy, Xander, Kevin Fox, Christopher Meyer, Cody Mitts, and Jiaxiang Wang. "AUTONOMOUS MAPPING." International Foundation for Telemetering, 2016. http://hdl.handle.net/10150/624237.

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This paper describes an autonomous platform that can map an indoor single-floor environment in two spatial dimensions. The design uses the Simultaneous, Localization, and Mapping (SLAM) algorithm, which utilizes inertial measurement unit (IMU), microcontroller unit (MCU), and a 360-degree laser scanner to autonomously maneuver and generate a building floor plan accessible by the user.

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Boggess, Jennifer Hall. "Mapping Appalachia." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1770.

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Thesis (M.F.A.)--West Virginia University, 2000.
Title from document title page. Document formatted into pages; contains v, 35 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 29).

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Crist, Rachel. "Mapping place." Tallahassee, Fla. : Florida State University, 2009. http://purl.fcla.edu/fsu/lib/digcoll/undergraduate/honors-theses/329859.

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Thesis (Honors paper)--Florida State University, 2009.
Advisor: Chad Eby, Florida State University, College of Visual Arts, Theatre and Dance, Dept. of Studio Art. Includes bibliographical references.

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Watson, Charles. "Brain mapping." Thesis, The University of Sydney, 2011. https://hdl.handle.net/2123/28840.

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These publications are a summary of work I have completed in brain mapping over many years. The work includes one book (The Rat Brain in Stereotaxic Coordinates, 6th compact edition), ten articles on hindbrain and spinal cord anatomy published in peer reviewed journals between 1975 to 2011, and five published chapters on spinal cord anatomy, including two spinal cord atlases. Over my career I have published 15 books on the anatomy of the brain and spinal cord of experimental animals. I am first author or equal co-author of ten of these books. The most successful of these books, "The Rat Brain in Stereotaxic Coordinates" (Paxinos and Watson, l 982, 1986, 1996, 1998, 2005, 2007), has earned over 50,000 citations since it was first published in 1982. The second edition alone is ranked 32 in the Thomson ISI 50 most cited publications of all time, having been cited 17,093 times up to January 2006. Dr George Paxinos and l are equal contributors to this work; the order of authors was decided on alphabetical precedence.

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Ceroni, Rodrigo. "Mobile Mapping System." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016.

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Nella tesi si espone il Mobile Mapping System, cioè il rilevamento di dati geospaziali utilizzando sensori montati a bordo di appositi veicolo senza l'ausilio di punti di contatto a terra. Si illustrano i diversi dispositivi del sistema installati a bordo, le loro diverse applicazioni e metodologie di rilevamento. Si trattano le varie problematiche sorte e le loro risoluzioni.

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Nordmark, Anton. "Kinect 3D Mapping." Thesis, Linköpings universitet, Datorseende, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-85158.

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This is a master thesis of the Master of Science degree program in Applied Physics and Electrical Engineering at Linköping University. The goal of this thesis is to find out how the Microsoft Kinect can be used as a part of a camera rig to create accurate 3D-models of an indoor environment. The Microsoft Kinect is marketed as a touch free game controller for the Microsoft Xbox 360 game console. The Kinect contains a color and a depth camera. The depth camera works by constantly projecting a near infrared dot pattern that is observed with a near infrared camera. In this thesis it is described how to model the near infrared projector pattern to enable external near infrared cameras to be used to improve the measurement precision. The depth data that the Kinect output have been studied to determine what types of errors it contains. The finding was that the Kinect uses an online calibration algorithm that changes the depth data.

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Haider, Zulqarnain. "Rich 2D Mapping." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-39800.

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Fire fighting operations, sometimes, can put the life of fire fighters in threat. For example an environment with potential fire risk and with the presence of gas bottles can cause an explosion, besides other dangers, and certainly put the life of both the victims and fire fighters at risk. Recent advancements in the field of robotics enabled to develop a robotic system which can assist the fire fighters to avoid any human injury and property damage. The live update of the map displayed on the operator’s screen, while teleoperating the robot for search process, can help to properly plan the rescue operation. This thesis details the implementation of a rich 2D mapping system for FUMO2 a fire fighting assistant robot developed by AB Realisator. Rich 2D mapping system produces an occupancy grid map, having the geometry and temperature of the environment with position of fire extinguishers, by fusing different sensor modalities. By rich we mean any type of additional information on top of the standard, geometric only, 2D maps. A sensor fusion method is proposed to integrate the distance measurements reported by a laser range finder, temperature readings acquired by a thermal IR camera and the position of fire extinguishers delivered by visible spectrum camera based object detector. The object detector detects the object in real time and is developed utilizing the technique of cascade of boosted classifiers using MB-LBP features. The proposed system is implemented on both FUMO2 a fire fighting assistant robot and in Gazebo simulator for testing and evaluation.

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Lundström, Emrik. "Vector Displacement Mapping." Thesis, Blekinge Tekniska Högskola, Institutionen för kreativa teknologier, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-4416.

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Kontext: Displacement Mapping är en teknik som används inom 3D-spel för att skapa detaljrikedom i geometri utan att behöva triangelobjekt bestående av oönskad geometrikomplexitet. Tekniken har även andra användningsområden i 3D-spel, till exempel terränggeometri. Tekniken skänker detaljrikedom genom att i samband med tesselering förskjuta geometri i en normalriktning eller längs annan specificerad riktning. Vector Displacement Mapping är en teknik liknande Displacement Mapping där skillnaden är att Vector Displacement Mapping förskjuter geometri i tre dimensioner. Mål: Syftet med arbetet är utforska Vector Displacement Mapping i sammanhanget 3D-Spel och att antyda att tekniken kan användas i 3D-spel likt Displacement Mapping. Arbetet jämför Vector Displacement Mapping med Displacement Mapping för att urskilja skillnader i exekveringstid mellan teknikernas centrala skillnader. Skillnaderna i exekveringstid ställs i kontrast mot diskussion av teknikernas grafikminnesanvändning. Metoder: Jämförelsen baseras på en implementation av de båda teknikerna tillsammans med tesselering. Prestandamätningar genereras med implementationen som grund. Implementationen använder sig av Direct3D 11. Resultat: Resultatet som erhålls genom jämförelsen visar att exekveringstiderna mellan teknikernas centrala skillnader varierar svagt. Grafikminnesanvändningen mellan teknikerna skiljer sig med en faktor 3 eller en faktor 4 där Vector Displacement Mapping använder mer grafikminne. Slutsatser: Slutsatser som dras baserat på resultatet är att Vector Displacement Mapping i situationer där överhängande geometri är ett önskat resultat kan ersätta Displacement Mapping. Vidare diskussion förs kring slutsatser, avgränsningar och framtida forskning som arbetet berör.

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Szepietowski, Rafał Marek. "Mapping cosmological fields." Thesis, University of Portsmouth, 2014. https://researchportal.port.ac.uk/portal/en/theses/mapping-cosmological-fields(fb512c54-97af-4422-be05-a8c71d2637d1).html.

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The advent of wide-field galaxy surveys with high quality imaging provides an opportunity to map the dark matter distribution in large parts of the visible Universe. However, the available probes of the large-scale structure have distinct properties. In particular, galaxies are a high resolution but biased tracer of mass, while weak lensing avoids such biases but, due to low signal-to-noise ratio, has poor resolution. After reviewing the applications of maps in cosmology, I investigate the relation between the Fourier phases of cosmological fields. By considering Gaussian random fields, I take some steps in describing the statistics of phase difference. Then I consider some simple models of realistic cosmological fields galaxies and weak gravitational lensing. I find that a linear bias evolving in redshift leads to a scale independent phase difference, whereas shot noise and stochasticity lead to a scale dependent phase difference. I investigate reconstructing the projected density field using the complementarity of weak lensing and galaxy positions. I propose a maximum probability reconstruction of the 2D lensing convergence with a likelihood term for shear data and a prior on the Fourier phases constructed from the galaxy positions. By considering only the phases of the galaxy field, the method evades the unknown value of the bias and allows it to be calibrated by lensing on a mode-by-mode basis.

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Muad, Anuar Mikdad. "Super-resolution mapping." Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/12309/.

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Super-resolution mapping is becoming an increasing important technique in remote sensing for land cover mapping at a sub-pixel scale from coarse spatial resolution imagery. The potential of this technique could increase the value of the low cost coarse spatial resolution imagery. Among many types of land cover patches that can be represented by the super-resolution mapping, the prediction of patches smaller than an image pixel is one of the most difficult. This is because of the lack of information on the existence and spatial extend of the small land cover patches. Another difficult problem is to represent the location of small patches accurately. This thesis focuses on the potential of super-resolution mapping for accurate land cover mapping, with particular emphasis on the mapping of small patches. Popular super-resolution mapping techniques such as pixel swapping and the Hopfield neural network are used as well as a new method proposed. Using a Hopfield neural network (HNN) for super-resolution mapping, the best parameters and configuration to represent land cover patches of different sizes, shapes and mosaics are investigated. In addition, it also shown how a fusion of time series coarse spatial resolution imagery, such as daily MODIS 250 m images, can aid the determination of small land cover patch locations, thus reducing the spatial variability of the representation of such patches. Results of the improved HNN using a time series images are evaluated in a series of assessments, and demonstrated to be superior in terms of mapping accuracy than that of the standard techniques. A novel super-resolution mapping technique based on halftoning concept is presented as an alternative solution for the super-resolution mapping. This new technique is able to represent more land cover patches than the standard techniques.

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Lim, Hilary. "Mapping welfare rights." Thesis, University of East London, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304631.

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Rikoski, Richard J. (Richard James) 1976. "Delayed stochastic mapping." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/91338.

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Kasturirangan, Rajesh 1971. "Mapping spatial relations." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/28313.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Brain and Cognitive Sciences, 2004.
Includes bibliographical references (p. 155-160).
One of the fundamental issues in cognitive science is the problem of grounding concepts in the perceptual world. In this thesis, I present a computational theory for how spatial relations are grounded in the perceptual world. Three constraints are critical to this theory: abstractness, groundedness and flexibility all of which need to be satisfied in order to explain the structure of spatial concepts. I then show how a formal framework, based on the mathematical notions of category theory can be used to model the grounding problem. The key computational ideas are that of minimal mapping and derivations. A minimal mapping of two categories, A and B, is the "smallest' category, C, that contains A and B. A derivation is a sequence of categories that follow a minimal mapping rule. Derivations and minimal mappings are used to model three domains - the semantics of prepositions, the structure of a toy "Jigsaw World" and the semantics of generic terms and quantifiers. In each case, I show how the computational theory gives rise to insights that are not available upon a purely empirical analysis. In particular, the derivational account shows the importance of stable, non-accidental features and of multiple scales in spatial cognition.
by Rajesh Kasturirangan.
Ph.D.

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Banterle, Francesco. "Inverse tone mapping." Thesis, University of Warwick, 2009. http://wrap.warwick.ac.uk/55447/.

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The introduction of High Dynamic Range Imaging in computer graphics has produced a novelty in Imaging that can be compared to the introduction of colour photography or even more. Light can now be captured, stored, processed, and finally visualised without losing information. Moreover, new applications that can exploit physical values of the light have been introduced such as re-lighting of synthetic/real objects, or enhanced visualisation of scenes. However, these new processing and visualisation techniques cannot be applied to movies and pictures that have been produced by photography and cinematography in more than one hundred years. This thesis introduces a general framework for expanding legacy content into High Dynamic Range content. The expansion is achieved avoiding artefacts, producing images suitable for visualisation and re-lighting of synthetic/real objects. Moreover, it is presented a methodology based on psychophysical experiments and computational metrics to measure performances of expansion algorithms. Finally, a compression scheme, inspired by the framework, for High Dynamic Range Textures, is proposed and evaluated.

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Esteve, Llorens Ana. "Mapping the Distant." VCU Scholars Compass, 2011. http://scholarscompass.vcu.edu/etd/2493.

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Bell, Mark Christopher. "Recognising mapping classes." Thesis, University of Warwick, 2015. http://wrap.warwick.ac.uk/77123/.

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This thesis focuses on three decision problems in the mapping class groups of surfaces, namely the reducibility, pseudo-Anosov and conjugacy problems. For a fixed surface, we use ideal triangulations to model both its mapping class group and space of measured laminations. This allows us to state these problems combinatorially. We give new solutions to each of these problems that, unlike the existing solutions which are based on the Bestvina–Handel algorithm, run in polynomial time when given a suitable certificate. This allows us to show that in fact each of these problems lies in the complexity class NP∩ co-NP instead of just EXPTIME. At the heart of each of our solutions is the maximal splitting sequence of a projectively invariant measured lamination, as described by Agol. The complexity of this sequence bounds the difficulty of determining many of the properties of such a lamination, including whether it is filling. In Chapter 4 we give explicit polynomial upper bounds on the periodic and preperiodic lengths of such a sequence. This allows us to construct the running time bounds needed to show that these problems lie in NP∩co-NP. We finish with a discussion of an implementation of these algorithms as part of the Python package flipper. We include several examples of properties of mapping classes that can be computed using it.

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Stevens, Brian K. "Increased Functionality of Floodplain Mapping Automation: Utah Inundation Mapping System (UTIMS)." DigitalCommons@USU, 2010. https://digitalcommons.usu.edu/etd/588.

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Flood plain mapping has become an increasingly important part of flood plain management. Flood plain mapping employs mapping software and hydraulic calculation packages to efficiently map flood plains. Modelers often utilize automation software to develop the complex geometries required to reduce the time to develop hydraulic models. The Utah Inundation Mapping System (UTIMS) is designed to reduce the time required to develop complex geometries for use in flood plain mapping studies. The automated geometries developed by UTIMS include: flood specific river centerlines, bank lines, flow path lines, cross sections and areal averaged n-value polygons. UTIMS thus facilitates developing automated input to US Army Corps of Engineer's HEC-RAS software. Results from HEC-RAS can be imported back to UTIMS for display and mapping. The user can also specify convergence criteria for water surface profile at selected locations along the river and thus run UTIMS and HEC-RAS iteratively till the convergence criterion is met. UTIMS develops a new flood specific geometry file for each iteration, enabling an accurate modeling of flood-plain. Utilizing this robust and easy to operate software within the GIS environment modelers can significantly reduce the time required to develop accurate flood plain maps. The time thus saved in developing the geometries allows modelers to spend more time doing the actual modeling and analyzing results. The time thus saved can also result in faster turn around and potential cost cutting in flood-plain modeling work. In this paper the authors describe UTIMS capabilities, compare them with other available software, and demonstrate the UTIMS flood plain automation process using a case study.

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Karlsson, Christoffer, and Lukas Schachtschabel. "Legible Tone Mapping : An evaluation of text processed by tone mapping operators." Thesis, Blekinge Tekniska Högskola, Institutionen för kreativa teknologier, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-12748.

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Context. Tone mapping operators (TMO) are designed to reduce the dynamicrange of high dynamic range images so that they can be presented onstandard dynamic range display devices. Many operators focus on creatingperceptually similar images. Objectives. This thesis aims to investigate how dierent TMOs reproducephotographed text. The underlying reason being to test the contrast reproductionof each TMO. Methods. An experiment has been performed in order to investigate thelegibility of photographed and tone mapped text. A user study was conducted,in which 18 respondents partook, where respondents were to ratehow much of the text in each photograph that they found to be legible. Results. Due to low participation, the results of the experiment are mostlyinconclusive. However, some tendencies have been observed and analyzedand they fall in line with previous work within the area. Conclusions. The main conclusion that can be drawn from the results isthat the TMO presented by Kuang [11] is rated as better than the TMOsby Fattal [7] and Kim and Kautz [10].

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Bonnell, Jennifer Leigh. "Mapping songs, mapping histories, the negotiation of cultural perspectives on Git_xsan territory." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ37393.pdf.

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Bell, Wesley. "Mapping desertification: towards an approach for mapping regional land degradation in drylands." Doctoral thesis, Faculty of Science, 2020. http://hdl.handle.net/11427/32201.

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Land degradation in drylands (desertification) is an issue that potentially impacts nearly half of the world's human population living on over a third of the Earth's land surface. Despite global concern of the impact of desertification on people and the environment, there is no universal method to assess and map desertification. Methods to assess desertification at the local to regional scale that can fit into a broader global desertification narrative are more appropriate. The overall objective of this thesis is to assess regional desertification using field and Earth observation data for the Namaqualand Hardeveld bioregion of South Africa. Field data on the condition of the land from 277 plots was analysed using Latent Class Analysis (LCA) and found to cluster into three separate states. The first state (S1) was comprised primarily of degraded plots. The third state (S3), on the other hand, was comprised primarily of non-degraded plots, while the plots in state two (S2) generally fell between those which were assigned to S1 and S3. Through the LCA, each plot was assigned a probability of belonging to each state, and the most important variables in distinguishing the three states (perennial plant cover and bare ground cover) were identified. A total of 16 remote sensing variables were determined for the project area. Five vegetation indices (NDVI, EVI, SAVI, OSAVI, MSAVI), as well as spectral mixture analysis (SMA) cover estimates for perennial vegetation, bare ground and bare rock were calculated using both Landsat 8 and Sentinel-2A data. These variables were used in a series of Partial Least Squares regression (PLSr) models to predict either the probability of a plot belonging to one of the three latent states, or the field estimated perennial plant and bare ground cover. The best performing PLSr model had ten remote sensing variables predicting the field estimates of cover (R2Ycum = 0.592; Q2cum = 0.554). Both Sentinel-2A and Landsat 8 SMA cover estimates were better at predicting field cover than any of the vegetation indices. Estimates of bare ground and perennial plant cover were projected over the project area using the PLSr model and ground truthed using data from 61 independent field test plots. There was a significant correlation between the PLSr estimates and the field estimates for both perennial plant cover and bare ground cover for the test plots with the best correlation found to be between the PLSr estimate of bare ground and field estimated bare ground cover (r = 0.827, p < 0.001, CI [0.727, 0.893]). The trendline slope and percentile range of a time series of the Landsat SMA bare ground estimate were used to create raster images. These images, along with images for the PLSr bare ground and perennial plant cover estimates, were converted into images representing membership values between zero and one for the habitat condition archetype. These three images were then combined to produce one raster representing the overall membership of the project area to the habitat condition archetype. The importance of five potential drivers of land degradation (elevation, slope aspect, slope steepness, rainfall trend, and land tenure) in predicting PLSrestimated perennial plant and bare ground cover were evaluated using a random forest model. All drivers were found to be important predictors of cover and were included in the construction of the final, multi-band archetype image. If habitat condition classes are designated according to the mean archetype membership value ± one / two standard deviations, then 17% of the project area could be considered moderately degraded, with just over 3% severely degraded. This novel method of assessing and mapping desertification leads to improved accuracy in predicting habitat condition in the context of potential drivers of change. The utility of SMA over traditional vegetation indices is supported for this particular environment. This methodology can be improved with better endmember designation as well as improved spatial data on the potential drivers of change in drylands. The archetype approach ensures less subjectivity in map production, and the retention of pertinent information in map products. The approach developed in this thesis will allow for more accurate desertification reporting for UNCCD member states and will ultimately improve efforts to combat desertification globally.

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Topp, Elin Anna. "Human-Robot Interaction and Mapping with a Service Robot : Human Augmented Mapping." Doctoral thesis, Stockholm : School of computer science and communication, KTH, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4899.

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Turk, Stacey N. "Fatty Acid Carcass Mapping." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2008-05-4.

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Zhang, Haoning. "Indexed semantic mapping rules." Zurich : ETH, Swiss Federal Institut of Technology, Institute of Information Systems, 2009. http://e-collection.ethbib.ethz.ch/show?type=dipl&nr=449.

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Hähnel, Dirk. "Mapping with mobile robots." [S.l. : s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=974035599.

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Almqvist, Erik. "Airborne mapping using LIDAR." Thesis, Linköping University, Automatic Control, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-58866.

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Mapping is a central and common task in robotics research. Building an accurate map without human assistance provides several applications such as space missions, search and rescue, surveillance and can be used in dangerous areas. One application for robotic mapping is to measure changes in terrain volume. In Sweden there are over a hundred landfills that are regulated by laws that says that the growth of the landfill has to be measured at least once a year.

In this thesis, a preliminary study of methods for measuring terrain volume by the use of an Unmanned Aerial Vehicle (UAV) and a Light Detection And Ranging (LIDAR) sensor is done. Different techniques are tested, including data merging strategies and regression techniques by the use of Gaussian Processes. In the absence of real flight scenario data, an industrial robot has been used fordata acquisition. The result of the experiment was successful in measuring thevolume difference between scenarios in relation to the resolution of the LIDAR. However, for more accurate volume measurements and better evaluation of the algorithms, a better LIDAR is needed.

Kartering är ett centralt och vanligt förekommande problem inom robotik. Att bygga en korrekt karta av en robots omgivning utan mänsklig hjälp har en mängd tänkbara användningsområden. Exempel på sådana är rymduppdrag, räddningsoperationer,övervakning och användning i områden som är farliga för människor. En tillämpning för robotkartering är att mäta volymökning hos terräng över tiden. I Sverige finns det över hundra soptippar, och dessa soptippar är reglerade av lagar som säger att man måste mäta soptippens volymökning minst en gång om året.

I detta exjobb görs en undersökning av möjligheterna att göra dessa volymberäkningarmed hjälp av obemannade helikoptrar utrustade med en Light Detectionand Ranging (LIDAR) sensor. Olika tekniker har testats, både tekniker som slår ihop LIDAR data till en karta och regressionstekniker baserade på Gauss Processer. I avsaknad av data inspelad med riktig helikopter har ett experiment med en industri robot genomförts för att samla in data. Resultaten av volymmätningarnavar goda i förhållande till LIDAR-sensorns upplösning. För att få bättre volymmätningaroch bättre utvärderingar av de olika algoritmerna är en bättre LIDAR-sensor nödvändig.

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Ni, Kai. "Tectonic smoothing and mapping." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41072.

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Large-scale mapping has become the key to numerous applications, e.g. simultaneous localization and mapping (SLAM) for autonomous robots. Despite of the success of many SLAM projects, there are still some challenging scenarios in which most of the current algorithms are not able to deliver an exact solution fast enough. One of these challenges is the size of SLAM problems, which has increased by several magnitudes over the last decade. Another challenge for SLAM problems is the large amount of noise baked in the measurements, which often yields poor initializations and slows or even fails the optimization. Urban 3D reconstruction is another popular application for large-scale mapping and has received considerable attention recently from the computer vision community. High-quality 3D models are useful in various successful cartographic and architectural applications, such as Google Earth or Microsoft Live Local. At the heart of urban reconstruction problems is structure from motion (SfM). Due to the wide availability of cameras, especially on handhold devices, SfM is becoming a more and more crucial technique to handle a large amount of images. In the thesis, I present a novel batch algorithm, namely Tectonic Smoothing and Mapping (TSAM). I will show that the original SLAM graph can be recursively partitioned into multiple-level submaps using the nested dissection algorithm, which leads to the cluster tree, a powerful graph representation. By employing the nested dissection algorithm, the algorithm greatly minimizes the dependencies between two subtrees, and the optimization of the original graph can be done using a bottom-up inference along the corresponding cluster tree. To speed up the computation, a base node is introduced for each submap and is used to represent the rigid transformation of the submap in the global coordinate frame. As a result, the optimization moves the base nodes rather than the actual submap variables. I will also show that TSAM can be successfully applied to the SfM problem as well, in which a hypergraph representation is employed to capture the pairwise constraints between cameras. The hierarchical partitioning based on the hypergraph not only yields a cluster tree as in the SLAM problem but also forces resulting submaps to be nonsingular. I will demonstrate the TSAM algorithm using various simulation and real-world data sets.

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Lundqvist, Tobias. "3D mapping with iPhone." Thesis, Linköpings universitet, Datorseende, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-71689.

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Today, 3D models of cities are created from aerial images using a camera rig. Images, together with sensor data from the flights, are stored for further processing when building 3D models. However, there is a market demand for a more mobile solution of satisfactory quality. If the camera position can be calculated for each image, there is an existing algorithm available for the creation of 3D models. This master thesis project aims to investigate whether the iPhone 4 offers good enough image and sensor data quality from which 3D models can be created. Calculations on movements and rotations from sensor data forms the foundation of the image processing, and should refine the camera position estimations. The 3D models are built only from image processing since sensor data cannot be used due to poor data accuracy. Because of that, the scaling of the 3D models are unknown and a measurement is needed on the real objects to make scaling possible. Compared to a test algorithm that calculates 3D models from only images, already available at the SBD’s system, the quality of the 3D model in this master thesis project is almost the same or, in some respects, even better when compared with the human eye.

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Bach, Thuthuy. "Computerized cardiac mapping system." Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/5878.

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This thesis presents the results of the work on a computerized cardiac mapping system for recording simultaneously the signals from three electrodes placed at different sites on the heart in order to diagnose the sites causing arrhythmias. The signals are buffered, amplified, filtered and transferred to a personal computer via a multiplexing A/D converter. The computer controls the data acquisition process and stores the data in the memory. Activation times of the heart are estimated by a computer algorithm and displayed on a screen. The digitized waveforms and the vertical time marker of the activation time on each waveform are also displayed for verification. Corrections of computer-estimated activation times are possible using an interactive computer program. With this system, the region initiating an arrhythmia can be localized within a few minutes. The system has been used clinically and proved to be effective in detection of the sites of early activation causing cardiac arrhythmia.

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HASSANZADEH, Aidin. "Mobile Robot Wind Mapping." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-34606.

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Statistical gas distribution mapping has recently become a prominent research area in the robotics community. Gas distribution mapping using mobile robots aims for building map of gas dispersion in an unknown environment using the sampled gas concentrations accompanied by the corresponding atmospheric variables. In this context, wind is considered as one of the main driving forces and recently exploited as an environmental bias in the the modelling process. However, the existing approaches utilizing the wind data are based on very simple averaging window methods which do not take the specic spatio-temporal wind variations into account appropriately. In the current thesis work, under the heading of statistical wind modelling, the various aspects of the existing approaches to model both temporal and spatial wind variations are studied. Accordingly, in the undertaking of Mobile Robot Wind Mapping (MRWM) task, three individual methods for statistically wind speed modelling, wind direction modelling and spatial wind mapping are proposed and implemented. Particularly, wind speed is modelled in form of a Gaussian distribution where the valid averaging scale is dened using an online adaptive approach, namely Time-Dependent Memory Method (TDMM) . The wind direction is modelled by means of the mixturemodel of Von-Mises distribution and for the spatial mapping of modelled wind data, a recursive approach based on Linear Kalman lter is utilized. The proposed approaches for statistically wind speed and direction modelling are applied to and evaluated by real wind data, collected specically for this project. The wind mapping algorithm is implemented and tested using simulated data.

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GALLART, DEL BURGO XAVIER. "Semantic Mapping in ROS." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-142411.

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In the last few years robots are becoming more popular in our daily lives. We can see them guiding people in museums, helping surgeons in hospitals and autonomously cleaning houses. With the aim of enabling robots to cooperate with humans and to perform human-like tasks we need to provide them with the capability of understanding human environments and representing the extracted knowledge in such a way that humans can interpret. Semantic mapping can be defined as the process of building a representation of the environment, incorporating semantic knowledge obtained from sensory information. Semantic properties can be extracted from various sources such as objects, topology of the environment, size and shape of rooms and room appearance. This thesis proposes an implementation of semantic mapping for mobile robots which is integrated in a framework called Robot Operating System (ROS). The system extracts spatial properties like rooms, objects and topological information and combines them with commonsense knowledge into a probabilistic framework which is capable of inferring room categories. The system is tested in simulations and in real-world scenarios and the results show how the system explores an unknown environment, creates an accurate map, detects objects, infers room categories and represents the results in a map where each room is labelled according to its functionality.

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McKenzie, Charles A. "Fast acquisition relaxation mapping." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0018/NQ58110.pdf.

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Light, Brandon W. "Energy-efficient photon mapping." Link to electronic thesis, 2007. http://www.wpi.edu/Pubs/ETD/Available/etd-051007-092224/.

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Thesis (M.S.) -- Worcester Polytechnic Institute.
Keywords: mobile devices; photon mapping; global illumination; ray tracing; energy; mobile; computer graphics. Includes bibliographical references (leaves 66-68).

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Hagvall, Anders. "Equalized MR Grayscale Mapping." Thesis, Linköpings universitet, Institutionen för teknik och naturvetenskap, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-95366.

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MR images are crucial for health care today and the application areas are continuously increasing. A major problem regarding visualization of these data sets is that there is no absolute scale for the data values. Even for the same type of examination the scale varies from patient to patient, from time to time, and from scanner model to scanner model. This thesis addresses the challenge of automatically generating visualization parameters for these data sets, eqalizing visual appearance and interactions to diversities in data set distributions. Main objectives are to achieve reasonably good starting visualizations and to ensure consistent interaction behaviour.

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De, Giusti Laura Cristina. "Mapping sobre arquitecturas heterógenas." Editorial de la Universidad Nacional de La Plata (EDULP), 2011. http://hdl.handle.net/10915/18372.

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Entre todas las ideas esparcidas por la Ciencia de la Computación en los últimos años, pocas han transformado el área de manera tan profunda como la computación paralela. Virtualmente todos los aspectos se vieron afectados, y se generó un gran número de conceptos nuevos. Desde la Arquitectura de Computadoras hasta los Sistemas Operativos, desde los Lenguajes de Programación y Compiladores hasta Bases de Datos e Inteligencia Artificial, y desde la Computación numérica hasta las Combinatorias, cada rama sufrió un renacimiento.
Tesis doctoral de la Facultad de Informática (UNLP). Grado alcanzado: Doctor en Ciencias Informáticas. Director de tesis: Guillermo Simari; co-director de tesis: Emilio Luque y Marcelo Naiouf.

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Molaodi, Oarabile Ruth. "Disease mapping and modelling." Thesis, University of Strathclyde, 2009. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=11461.

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Kakarouhas, Haris. "'Prosopography' : mapping the self." Thesis, University of Derby, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486681.

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This thesis is going into an extensive discussion of the issue of prosopography: Prosopography of a place, of an object, of a person. I consciously employ the term 'prosopography' in the place of commonly used 'portraiture', as it entails the Greek word 'prosopon', which means both 'face' and 'person'. Prosopon, this wider-than-personality entity, becomes the core issue ofmy thesis. The project comprises a body of 69 colour photographs accompanied with the text in ~ unity. The photographs - won the European Publishers Award 2003 - are included in the form of a book - published in the U.K by Dewi Lewis Publishing - under the title Suspended time. A Cuban Portrait. The studio where the pictures were made is Cuba. Practicing and employing the expressive medium of photography, this project becomes a personal quest for the truth of my gaze, and the relationship between practice and theory can be seen in terms of communicating knowledge in an implicit and explicit way. The practical project's implicit knowledge made explicit in the written text element of the thesis. So, writing clarifies the artistic work and also contextualizes it. It simultaneously assumes the role of method and tool. The hermeneutic approach is the method that is used in both contexts of this qualitative research. ..' This written thesis consists of the introduction and three chapters. In the introduction, after establishing the contextual and conceptual framework within which I have produced my research thesis, I briefly discuss my development in the photographic medium: 'the gestation period' that gave birth to this project. In addition, I present certain key-notions of my research, like prosopon and prosopography. I conclude with a brief reference to the photographic work of Cuba, the reasons that may differentiate it from similar projects, its development today, and the methodology that was followed throughout this thesis. In chapter 1, I firstly refer to all these factors that fonn the values and principles on which images ofprosopon are based. Then, I proceed into a presentation of characteristic instants ofprosopon in the course of Art-History, drawing both on painting and photography. In chapter 2 I present and discuss the psychological approach to the subject, examining the notions of the ego, self-identity, the soul, ego-death and presence, as well as the notion of the philosophical tennprosopon, which as aforementioned is central to my project. Next~ I go through the photographic procedure referring principally to photographic time and empathy as its main components, and under the perspective of prosopon and presence. In chapter 3, I go through the various stages of my photographic exploration, the choice of locale, and the conditions of shooting, the tools employed and also the post-production state. Finally in the conclusions I discuss all understanding and realisations came out ofthis exploration regarding prosopography.

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Erdoǧdu, Zeynep Pirin. "Mapping the cosmic web." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616232.

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Barclay, Bindy. "Inside Out : mapping media." Thesis, University of Canterbury. Sociology and Anthropology, 2007. http://hdl.handle.net/10092/1032.

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The orders of linkages that stabilise evolving media worlds are far from obvious. Often undertaken in media ‘laboratories’, the collaborative processes which combine a range of disciplines to develop media worlds are also far from straightforward. Enablers and constraints are as likely to be non-human as they are the people associated with the project. Plugs, wires, switches, protocols and standards - things whose detail can be mind numbingly boring - all have to be worked into effective and stable sets of associations. This thesis describes two knowledge pathways that track through such a project. The first describes the development of a prototype for a website, imagined as a portal for a range of interests around children and media in New Zealand/Aoteoroa. As media worlds are continually being reconfigured and as data circulates across increasingly linked access technologies, many non-government organisations are migrating their work to ‘the web’. ‘The Media Clearinghouse’ project was one of these. Latour’s analytical concept of immutable mobiles provides a way to make sense of some of the work observed whilst his direction to ‘simply follow’ worlds of interest provided the methodological challenge. The second pathway, traces the bibliographic threads of literatures that come from the descriptive genres of Science Technology Studies (STS). Significant amongst these are Leigh Star and Geoffrey Bowker who have elaborated the concept of boundary objects and infrastructures. Star and Griesemer’s seminal description of the Museum of Invertebrate Zoology is compared with a description of an early laboratory by Bruno Latour. These and other writers elaborate on methods that offer ways to render visible the messy, chaotic performances of design and invention. They follow inscriptions - tables, lists, maps, sketches and so on. These things work between the micro and the macro and enable very huge terrains to be assembled in small, ordered spaces. The thesis assembles a list of methods that have some utility for following and describing web design work and perhaps, other information worlds. Having followed and described this writer’s work through the invention of the prototype it is argued that a combinative method has successfully enabled a description that moves in and out of a new information ‘laboratory’.

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Pantelides, Kate Lisbeth. "Mapping Dissertation Genre Ecology." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4557.

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Though the pervasive rumor that the “traditional” dissertation persists because of the “I suffered, so they too should suffer” mentality — the professor revenge theory — students are often the ones eager to pin down writing genres so that they can master them. However, hopes to stabilize and thus capture the secret or equation of the dissertation genre are futile, since genres, like language, are alive: rhetorical, evolving, and flexible. Thus, to demonstrate the contemporary context of the dissertation genre, the conflicting perspectives of university stakeholders, the forces working on the genre to enact change, and the process by which genre knowledge develops and transfers in the highest levels of university writing, Mapping Dissertation Genre Ecology explores the discourse, both written and spoken, which constitutes the dissertation as a discursive construct — what I call the dissertation genre ecology. To better understand how dissertations are shaped institutionally, I ask the following questions: How is the dissertation as a genre constituted by various stakeholder groups at the university? How do these myriad accounts contribute to a larger system, a dissertation genre ecology at the university? And, ultimately, how does the dissertation genre ecology affect genre change? Through the use of rhetorical genre theory, my study develops a broad, interdisciplinary conception of genre, one that is not mired in formalistic worries about fixing genre in place. I use the voices of students and faculty from the humanities and social sciences as well as interdisciplinary documents as data for this project. By examining these discursive artifacts and making institutional tensions explicit, my project has broad implications for WAC/WID literature in transfer and genre studies.

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Haugen, Kenneth Eide. "Surface Mapping using Quadcopter." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for teknisk kybernetikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-25916.

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This thesis studies the use of unmanned aerial vehicles to perform ice managementin the Arctic Ocean by gathering information about and physically control the iceenvironment. Such a system is needed for safety reasons as marine operations aremoving further north. In order to gather information about the ice environment, aUAV will be used for surface mapping. The quadcopter Parrot AR. Drone 2.0 will be used as a testbed for implementing proposed strategies for guidance, navigation and control while doing surface mapping using a camera. A guidance and navigation system is designed and implemented using measurements from onboard sensors and the camera system OptiTrack, which is used to measure position, velocity and orientation of the quadcopter. Using these estimated states as parameters and inputs to a proportional-integral-derivative controller, the position will be controlled. Waypoints are calculated according to desired parameters provided by an operator. An autonomous guidance, navigation and control system that moves the drone in a search pattern inside a desired area requested by the operator, is the result of the designed surface mapping strategy. An algorithm that performs object detection and mapping is implemented for the onboard camera to be able to detect objects in the lab setup. Back-projection of a 2D pixel point to respective world coordinates is implemented. C++ is used for all modules.Sub modules are simulated in Matlab and Simulink before tested with the AR.Drone. Simulations and measurements from lab testing are compared for performance evaluation. Results for the overall implementation shows that a UAV platform for doing object mapping is indeed a concept to pursue. However, this lab setup would not be applicable in a real world experiment. The AR. Drone will, due to its weight and limited power, not be able to operate under heavy wind and weather conditions. Also, detection of ice is more complicated than the suggested implementation, due to factors like weather and light reflections. It should be clear that this system design is rather a prototype illustration of a concept than a system to be used.

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Anderson, Michael D., and Gurnam Singh Gill. "Resolution in radar mapping." Thesis, Monterey, California: Naval Postgraduate School, 1993. http://hdl.handle.net/10945/24223.

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Dahlgren, Martin, and Viktor Westin. "Mapping of environmental KPIs." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-114535.

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The aviation industry is facing many challenges concerning environmental effects associated to an overall increase in air travel. In order to analyse these environmental effects, the possibility for measurement in the areas connected to the aviation industry is essential. Metrics measuring progress towards meeting goals, called key performance indicators, are used in order to meet this requirement. The purpose of the thesis is to map and evaluate the various environmental key performance indicators that are utilised within European Air Traffic Management today, and the development underway for the future. Suggestions to LFV regarding suitable e-KPIs, and how they can be used within their organisation are also provided. Several organisations and initiatives, including the European Union, EUROCONTROL, Single European Sky, the International Civil Aviation Organisation and the Civil Air Navigation Service Organisation, as well as the British and French air navigation service providers, in addition to other stakeholders within the industry, have been investigated in terms of their work in the environmental area and which indicators they utilise. The investigation is based on a literature study and interviews conducted with stakeholders within previously mentioned organisations. Out of 39 indicators found during the mapping, seven remain after an initial selection and an analysis based on the utilisation of the SMART-model. In addition to the use of the SMART-model, the choice of suitable indicators is also based on the fact that the whole spectrum of a flight, meaning all phases, including planning, taxi-out, departure, en route, descent and arrival as well as taxi-in, should be taken into consideration.

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Smith, Christopher Michael 1969. "Integrating mapping and navigation." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/50047.

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Yu, Stephanie (Stephanie T. ). "Distributed curricular goal mapping." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/100613.

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Thesis: M. Eng. in Computer Science and Engineering, Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2015.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 51-52).
For this thesis, I implemented a tool that documents the equivalent of an API specification for a course or other curriculum component in an educational curriculum. This API specification is the contractual relationship between each course and the surrounding curriculum. By decomposing the curriculum in a structural manner, we can more easily ensure consistency for courses and the goals they promise to teach across a curriculum. With such a structure, we can also begin to visualize these relationships between courses, to better understand where what students learn will lead them in their time in academia. To do this, I created a visualization tool that takes advantage of the structure provided by the API specification and allows for the observation and manipulation of these relationships. In addition to applying structure to a curriculum and visualizing the resulting relationships, I have also designed and implemented protocols that will allow these relationships to be shared and distributed across universities.
by Stephanie Yu.
M. Eng. in Computer Science and Engineering

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Crawford, William Charles Richards. "Mapping healthcare information technology." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/58179.

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Thesis (S.M.)--Harvard-MIT Division of Health Sciences and Technology, 2010.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 56-58).
In this thesis I have developed a map of Healthcare Information Technology applications used in the United States for care delivery, healthcare enterprise management, clinical support, research and patient engagement. No attempt has previously been made to develop such a taxonomy for use by healthcare policy makers and on-the-spot decision makers. Using my own fifteen years of experience in HIT, along with an extensive set of literature reviews, interviews and on-site research I assembled lists of applications and organized them into categories based on primary workflows. Seven categories of HIT systems emerged, which are Practice Tools, Advisory Tools, Financial Tools, Remote Healthcare Tools, Clinical Research Tools, Health 2.0 Tools and Enterprise Clinical Analytics, each of which have different operational characteristics and user communities. The results of this pilot study demonstrate that a map is possible. The draft map presented here will allow researchers and investors to focus on developing the next generation of HIT tools, including software platforms that orchestrate a variety of healthcare transactions, and will support policy makers as they consider the impact of Federal funding for HIT deployment and adoption. Further studies will refine the map, adding an additional level of detail below the seven categories established here, thus supporting tactical decision making at the hospital and medical practice level.
by William Charles Richards Crawford.
S.M.

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Dissertations / Theses on the topic 'Mapping'

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